6a60f18997
071765749a70b22fb62f2efc07a3f242ff5b4c52 improved constexpr-unknown diagnostics, but potential constant expression checking broke in the process: we produce diagnostics in more cases. Suppress the diagnostics as appropriate. This fix affects -Winvalid-constexpr and the enable_if attribute. (The -Winvalid-constexpr diagnostic isn't really important right now, but it will become important if we allow constexpr-unknown with pre-C++23 standards.) Fixes #149041. Fixes #149188.
34 lines
1.6 KiB
C++
34 lines
1.6 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -std=c++20 -verify -fcxx-exceptions %s
|
|
// RUN: %clang_cc1 -fsyntax-only -std=c++23 -Winvalid-constexpr -verify -fcxx-exceptions %s
|
|
// Note: for a diagnostic that defaults to an error, -Wno-foo -Wfoo will
|
|
// disable the diagnostic and then re-enable it *as a warning* rather than as
|
|
// an error. So we manually enable it as an error again with -Werror to keep
|
|
// the diagnostic checks consistent.
|
|
// RUN: %clang_cc1 -fsyntax-only -std=c++23 -Wno-invalid-constexpr -Winvalid-constexpr -Werror=invalid-constexpr -verify -fcxx-exceptions %s
|
|
|
|
// RUN: %clang_cc1 -fsyntax-only -Wno-invalid-constexpr -verify=good -fcxx-exceptions %s
|
|
// RUN: %clang_cc1 -fsyntax-only -std=c++23 -verify=good -fcxx-exceptions %s
|
|
// RUN: %clang_cc1 -fsyntax-only -std=c++23 -Wno-invalid-constexpr -verify=good -fcxx-exceptions %s
|
|
// RUN: %clang_cc1 -fsyntax-only -std=c++23 -Winvalid-constexpr -Wno-invalid-constexpr -verify=good -fcxx-exceptions %s
|
|
// RUN: %clang_cc1 -fsyntax-only -Wno-invalid-constexpr -verify=good -fcxx-exceptions %s
|
|
// good-no-diagnostics
|
|
|
|
constexpr void func() { // expected-error {{constexpr function never produces a constant expression}}
|
|
throw 12; // expected-note {{subexpression not valid in a constant expression}}
|
|
}
|
|
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Winvalid-constexpr"
|
|
constexpr void other_func() {
|
|
#pragma clang diagnostic pop
|
|
|
|
throw 12;
|
|
}
|
|
|
|
namespace GH149041 {
|
|
// Make sure these don't trigger the diagnostic.
|
|
extern const bool& b;
|
|
constexpr bool fun1() { return b; }
|
|
constexpr bool fun2(const bool& b) { return b; }
|
|
}
|